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Varakin V. Photolysis of adsorbed polyatomic molecules on dielectric surfaces: General mechanisms. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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2
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Murga MS, Wiebe DS, Vasyunin AI, Varakin VN, Stolyarov AV. Experimental and theoretical studies of photoinduced reactions in the solid phase of the interstellar medium. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4912] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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3
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Vaida ME, Bernhardt TM. Surface-Aligned Femtochemistry: Molecular Reaction Dynamics on Oxide Surfaces. SPRINGER SERIES IN CHEMICAL PHYSICS 2014. [DOI: 10.1007/978-3-319-02051-8_10] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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4
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Kershis MD, Wilson DP, White MG. Dynamics of acetone photooxidation on TiO2(110): State-resolved measurements of methyl photoproducts. J Chem Phys 2013; 138:204703. [DOI: 10.1063/1.4805065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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5
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DeSimone AJ, Olanrewaju BO, Grieves GA, Orlando TM. Photodissociation of methyl iodide adsorbed on low-temperature amorphous ice surfaces. J Chem Phys 2013; 138:084703. [DOI: 10.1063/1.4790585] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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6
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Vaida ME, Bernhardt TM. Surface pump-probe femtosecond-laser mass spectrometry: time-, mass-, and velocity-resolved detection of surface reaction dynamics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2010; 81:104103. [PMID: 21034102 DOI: 10.1063/1.3488098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A detailed account of the experimental methodology of surface pump-probe femtosecond-laser mass spectrometry is presented. This recently introduced technique enables the direct time-resolved investigation of surface reaction dynamics by monitoring the mass and the relative velocity of intermediates and products of a photoinduced surface reaction via multiphoton ionization. As a model system, the photodissociation dynamics of methyl iodide adsorbed at submonolayer coverage on magnesia ultrathin films is investigated. The magnesia surface preparation and characterization as well as the pulsed deposition of methyl iodide are described. The femtosecond-laser excitation (pump) and, in particular, the resonant multiphoton ionization surface detection (probe) schemas are discussed in detail. Results of pump-probe time-resolved methyl and iodine atom detection experiments are presented and the potential of this method for velocity-resolved photofragment analysis is evaluated.
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Affiliation(s)
- Mihai E Vaida
- Institute of Surface Chemistry and Catalysis, University of Ulm, Albert-Einstein-Allee 47, 89069 Ulm, Germany
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Vaida ME, Hindelang PE, Bernhardt TM. Femtosecond real-time probing of transition state dynamics in a surface photoreaction: Methyl desorption from CH3I on MgO(100). J Chem Phys 2008; 129:011105. [DOI: 10.1063/1.2953578] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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8
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Osgood R. Photoreaction Dynamics of Molecular Adsorbates on Semiconductor and Oxide Surfaces. Chem Rev 2006; 106:4379-401. [PMID: 17031991 DOI: 10.1021/cr050175x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Richard Osgood
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
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Hess WP, Joly AG, Beck KM, Henyk M, Sushko PV, Trevisanutto PE, Shluger AL. Laser Control of Desorption through Selective Surface Excitation. J Phys Chem B 2005; 109:19563-78. [PMID: 16853531 DOI: 10.1021/jp0523672] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We review recent developments in controlling photoinduced desorption processes of alkali halides. We focus primarily on hyperthermal desorption of halogen atoms and show that the yield, electronic state, and velocity distributions of desorbed atoms can be selected using tunable laser excitation. We demonstrate that the observed control is due to preferential excitation of surface excitons. This approach takes advantage of energetic differences between surface and bulk exciton states and probes the surface exciton directly. We demonstrate that desorption of these materials leads to controlled modification of their surface geometric and electronic structures. We then extend the exciton mechanism of desorption, developed for alkali halides, to metal oxide surfaces, in particular magnesium oxide. In addition, these results demonstrate that laser desorption can serve as a solid-state source of halogen and oxygen atoms, in well-defined electronic and velocity states, for studying chemical processes in the gas phase and at surfaces.
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Affiliation(s)
- Wayne P Hess
- Pacific Northwest National Laboratory, P. O. Box 999, Richland, Washington 99352, USA.
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White JM, Henderson MA. Thermal and Photochemistry of tert-Butyl Iodide on Rutile TiO2(110). J Phys Chem B 2005; 109:14990-5000. [PMID: 16852898 DOI: 10.1021/jp0517448] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The thermal and photochemistry of tert-butyl iodide (t-buI) dosed at 100 K on rutile TiO2(110) has been studied using isothermal and temperature programmed desorption mass spectrometry. Nondissociative adsorption and desorption dominate the thermal behavior with dose-dependent t-buI desorption peaks at nominally 220 and 150 K. Ultraviolet photochemistry occurs readily, but the behavior of submonolayers and multilayers differ qualitatively. Ejection of t-buI and i-C4H8 dominate during submonolayer photolysis at 100 K. Multilayer photolysis results are also dominated by ejection during irradiation, but the t-buI component is strongly suppressed, and the maximum rates of i-C4H8 and HI ejection did not occur at the outset. A mechanistic model capturing the observations involves both direct and substrate-mediated electronic excitation of t-buI. According to this model, ejection of t-buI occurs only from transient substrate-mediated formation of anionic t-buI. For either excitation path, the C-I dissociation probability is significant, and the excited tert-butyl product rearranges readily to form i-C4H8 that is ejected. For any local region where there is multilayer coverage, products formed at the adsorbate-vacuum interface are ejected promptly, but products formed within the multilayer are trapped. Thus, ejection of t-buI is suppressed, and trapped primary photodissociation products, tert-butyl and I, react to either reform t-buI or rearrange to i-C4H8 and HI. The latter two products remain trapped and are subsequently induced to desorb by acquisition of momentum from collisions with subsequently formed translationally excited photodissociation products.
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Affiliation(s)
- J M White
- Institute for Interfacial Catalysis and Interfacial Chemistry and Engineering Group, P.O. Box 999, MS K8-93, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
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Beck KM, Joly AG, Dupuis NF, Perozzo P, Hess WP, Sushko PV, Shluger AL. Laser control of product electronic state: Desorption from alkali halides. J Chem Phys 2004; 120:2456-63. [PMID: 15268386 DOI: 10.1063/1.1637336] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We demonstrate laser control of the electronic product state distribution of photodesorbed halogen atoms from alkali halide crystals. Our general model of surface exciton desorption dynamics is developed into a simple method for laser control of the relative halogen atom spin-orbit laser desorption yield. By tuning the excitation laser photon energy in a narrow region of the absorption threshold, the yield of excited state chorine atoms, Cl(2P(1/2)), can be made to vary from near 0 to 80% for KCl and from near 0 to 50% for NaCl relative to the total yield of Cl atoms. We describe the physical properties necessary to obtain a high degree of product state control and the limitation induced when these requirements are not met. These results demonstrate that laser control can be applied to solid state surface reactions and provide strong support for surface exciton-based desorption models.
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Affiliation(s)
- Kenneth M Beck
- Pacific Northwest National Laboratory, William R. Wiley Environmental Molecular Sciences Laboratory, Richland, Washington 99352, USA.
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Srivastava A, Osgood RM. State-resolved dynamics of 248 nm methyl-iodide fragmentation on GaAs(110). J Chem Phys 2003. [DOI: 10.1063/1.1619944] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Srivastava A, Osgood RM. Photoreaction dynamics of CH3I multilayers on GaAs(110): REMPI probing of the CH3 umbrella mode. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)00287-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Khan KA, Camillone N, Osgood RM. Chain-Length Dependence of the Dissociation Dynamics of Oriented Molecular Adsorbates: n-Alkyl Bromides on GaAs(110). J Phys Chem B 1999. [DOI: 10.1021/jp990782m] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Khalid A. Khan
- Columbia Radiation Laboratory, Columbia University, New York, New York 10027
| | - Nicholas Camillone
- Columbia Radiation Laboratory, Columbia University, New York, New York 10027
| | - Richard M. Osgood
- Columbia Radiation Laboratory, Columbia University, New York, New York 10027
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Furlan A, Hall GE. Photoproducts ejected from liquid surfaces: The importance of photochemical, diffusional, kinetic, and surface structural effects. J Chem Phys 1998. [DOI: 10.1063/1.477694] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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16
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Brown LA, Rayner DM. Substrate mediated photochemistry on a molecular surface: OCS on Ag clusters. J Chem Phys 1998. [DOI: 10.1063/1.476818] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- L. A. Brown
- Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6
| | - D. M. Rayner
- Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6
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Kim SH, Stair PC, Weitz E. UV-induced desorption of CH3X (X=I and Br)/TiO2(110). J Chem Phys 1998. [DOI: 10.1063/1.475914] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Baronavski AP, Owrutsky JC. Vibronic dependence of the B̃ state lifetimes of CH3I and CD3I using femtosecond photoionization spectroscopy. J Chem Phys 1998. [DOI: 10.1063/1.475744] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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Khan KA, Moryl JE, Slater DA, Lasky PJ, Osgood RM. Energy- and Angle-Resolved Fragmentation of Ethyl Bromide on GaAs(110). J Phys Chem B 1997. [DOI: 10.1021/jp971970k] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Khalid A. Khan
- Columbia Radiation Laboratory, Columbia University, New York, New York 10027
| | - Joseph E. Moryl
- Columbia Radiation Laboratory, Columbia University, New York, New York 10027
| | - David A. Slater
- Columbia Radiation Laboratory, Columbia University, New York, New York 10027
| | - Peter J. Lasky
- Columbia Radiation Laboratory, Columbia University, New York, New York 10027
| | - Richard M. Osgood
- Columbia Radiation Laboratory, Columbia University, New York, New York 10027
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Polanyi JC, Sze NSK, Wang JX. Photochemistry of Adsorbed Molecules. 19. Photodissociation of CH3I on LiF(001) and NaCl(001) at 248 nm: REMPI Probing of CH3. J Phys Chem A 1997. [DOI: 10.1021/jp970965d] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. C. Polanyi
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3H6
| | - N. S.-K. Sze
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3H6
| | - J.-X. Wang
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3H6
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21
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Setzler JV, Guo H, Schatz GC. Photoinitiated Reaction Dynamics between Aligned Adsorbates on Solid Surfaces: A Theoretical Exploration of the H + CO2 System on LiF(001). J Phys Chem B 1997. [DOI: 10.1021/jp970178g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Josie V. Setzler
- Department of Chemistry, University of Toledo, Toledo, Ohio 43606-3390
| | - Hua Guo
- Department of Chemistry, University of Toledo, Toledo, Ohio 43606-3390
| | - George C. Schatz
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113
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22
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Garrett SJ, Heyd DV, Polanyi JC. Photochemistry of adsorbed molecules. XVIII. Photodissociation and exchange reaction in CH3Br/MgO(001) at 193 nm. J Chem Phys 1997. [DOI: 10.1063/1.473743] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Garrett SJ, Heyd DV, Polanyi JC. Photochemistry of adsorbed molecules. XVII. Photodissociation at 193 nm of CH3Br adsorbed on LiF(001) and NaCl(001). J Chem Phys 1997. [DOI: 10.1063/1.473742] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Graham JD, Roberts JT, Anderson LD, Grassian VH. The 367 nm Photochemistry of OClO Thin Films and OClO Adsorbed on Ice. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp962054u] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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25
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State specific, angle velocity resolved measurements of photodissociation in clusters: I atom escape from (CH3I)n (n = 1,2,3). Chem Phys 1996. [DOI: 10.1016/0301-0104(95)00438-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Angle-velocity-resolved measurements of I(2P3/2,1/2) from (CH3I)n cluster photodissociation at 266 and 304 nm. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)01051-a] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Setzler JV, Huang Z, Guo H. Theoretical modeling of photodissociation dynamics of CH3I on MgO(001). J Chem Phys 1995. [DOI: 10.1063/1.470669] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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